Lochinvar EFFICIENCY PLUS Designer'S Manual Download Page 1 | Manualshive

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DESIGNER’S GUIDE

EFFI

®

BOILER

1 5 0 , 0 0 0 – 3 0 0 , 0 0 0 B T U / H R

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Summary of Contents for EFFICIENCY PLUS

Page 1: ...DESIGNER S GUIDE EFFICIENCY BOILER 1 5 0 0 0 0 3 0 0 0 0 0 B T U H R ...

Page 2: ...inct easy to use manner so you can use and share information confidently and with minimal effort However it is important to remember that this guide is not intended to replace our installation manual Installers should still refer to our installation manual for specific installation instructions We hope our manual will make your work easier and more productive As always we greatly appreciate your i...

Page 3: ...ion 8 FIG 8 E Vent With Sidewall Air Inlet 9 FIG 9 E Vent With Vertical Air Inlet 10 FIG 10 Horizontal Direct Vent 11 FIG 11 Horizontal Direct Vent Cap 11 FIG 12 Multiple Sidewall Vent Caps 12 FIG 13 Vertical Direct Vent 12 FIG 14 Outdoor Venting 13 FIG 15 Primary Secondary System Piping 16 FIG 16 Low Temperature Bypass System Piping 17 FIG 17 Heating Chilled Water System 18 TABLE A Clearances Fro...

Page 4: ... Code CAN CGA B149 1 and or B149 2 and or local codes LOCATION OF UNIT Locate the unit so that if water connections should leak water damage will not occur When such locations cannot be avoided it is recommended that a suitable drain pan adequately drained be installed under the unit The pan must not restrict combustion air flow Under no circumstances is the manufacturer to be held responsible for...

Page 5: ... clearance requirements These requirements must be adhered to carefully since wind rain snow and cold cannot be controlled in outdoor applications See Outdoor Installation in the venting section on page 13 COMBUSTION AND VENTILATION Provisions for combustion and ventilation air must be in accordance with Section 5 3 Air for Combustion and Ventilation of the latest edition of the National Fuel Gas ...

Page 6: ...a net free area of one square inch for each 1000 Btu hr of input but not less than 100 square inches 645 cm2 If a single combustion air opening is provided to bring combustion air in directly from the outdoors the opening must be sized based on a minimum free area of one square inch per 3000 Btu hr This opening must be located within 12 30 cm of the top of the enclosure Lochinvar FIG 4 COMBUSTION ...

Page 7: ...and separation of joints The connection from the appliance vent to the stack or vent termination outside the building must be made with listed Type B double wall vent or equivalent for conventional vent applications When utilizing direct vent capabilities connections must be made with AL29 4C stainless steel or equivalent vent material Material should be sized according to vent sizing tables FAN c...

Page 8: ...to ensure that no blockage occurs The distance of the vent terminal from adjacent public walkways adjacent buildings windows that open and building openings must comply with the latest edition of the National Fuel Gas Code ANSI Z223 1 The vent terminal must be vertical and exhaust outside the building at least 2 feet 0 6m above the highest point of the roof within a 10 foot 3 0m radius of the term...

Page 9: ...ections of liner or any signs of condensate drainage at the breeching or clean out If there is any doubt about the condition of a masonry chimney it should be relined Metallic liner systems Type B double wall flexible or rigid metallic liners are recommended to line or reline an existing masonry chimney Consult with local code officials to determine code requirements or the advisability of using a...

Page 10: ... of general crowding or other reasons neither of these locations are possible use a single large control in the breeching between the boiler nearest the chimney and the chimney as shown in Location C Figure 7 Conventional Venting with Direct Combustion Air Intake E Vent This vent system uses two pipes one vertical pipe with a roof top termination for the flue products and one pipe for combustion a...

Page 11: ...t The sidewall air inlet cap is supplied in the E Sidewall Vent Kit Each kit includes a sidewall combustion air inlet cap to supply air to a single boiler and instructions for proper installation The part number for each kit is listed by unit size Locate units as close as possible to the sidewall where the combustion air supply system will be installed To prevent recirculation of flue products fro...

Page 12: ... area equal to or greater than the total area of all air inlet pipes connected to the common air inlet This exterior opening for combustion air must connect directly to the outdoors The total length of the combined air inlet pipe must not exceed a maximum of 50 equivalent feet 15 2m Deduct the restriction in area provided by any screens grills or louvers installed in the common air inlet point Scr...

Page 13: ...ucts into the combustion air inlet The combustion air inlet cap must not be installed above the flue outlet cap Maintain a minimum 3 foot 0 9m radius clearance between the combustion air inlet cap and the flue outlet cap Additional space may be required between caps where high winds may occur The combustion air inlet cap and vent cap for flue outlet must be located on the same sidewall and in the ...

Page 14: ...termination ell on the air inlet must be located a minimum of 12 15 2cm above the roof or above normal levels of snow accumulation The point of termination for the air inlet shall be 24 0 6m lower than the point of flue gas termination if it is located within 10 ft 3 0m of the flue outlet Incorrect installation and or location of the air inlet cap can allow the discharge of flue products to be dra...

Page 15: ...y wall or vertical surface to prevent adverse wind conditions from affecting performance Multiple unit outdoor installations require 48 1 22 m clearance between each vent cap The outdoor cap must be located 4 feet 1 22 m below and 4 feet 1 22 m horizontally from any window door walkway or gravity air intake The combustion air inlet of the outdoor cap must be located at least one foot 0 30 m above ...

Page 16: ...rn water from the system The connection on the header marked Outlet should be connected to the system supply See Boiler Piping diagrams Appendix A Lochinvar NOTE Care should be taken to measure temperature rise and maintain proper water velocity in the heat exchanger TABLE H INLET GAS PRESSURE REQUIREMENTS NATURAL GAS LPG Max Allowable 10 5 13 Inches water column Min Allowable 4 7 8 Inches water c...

Page 17: ... the boiler The pump is sized based on the required boiler flow rate boiler head loss and head loss in the secondary system piping A separate pump is used to provide the desired flow for the system Primary Secondary piping allows the system and the boiler s to operate at their optimum flow rate The system works best when the boiler s are supplied with pump control relays which are used to cycle th...

Page 18: ...rs requiring forced circulation See CSD1 CW 210 Part A It is prudent to verify preference with the local code official A specially sealed flow switch and conduit are furnished for outdoor installations Low Water Cut off If this boiler is installed above radiation level a low water cut off device must be installed at the time of boiler installation option available from factory Relief Valve Piping ...

Page 19: ... having no temperature overshoot Result High system efficiency The boiler s unique construction prevents the transfer of heat exchanger thermal stresses to other boiler components reducing wear and tear while increasing equipment life Its compact simple design and low boiler mass permits a simple bypass arrangement which will allow the system to be operated at any temperature above 60 F 16 C A boi...

Page 20: ... heating thermostat is satisfied This provides greater economy overall by maintaining standby heat AIR REMOVAL An air separation device should be placed in the installation piping on the suction side of the system pump to eliminate trapped air in the system Locate a system air vent at the highest point in the system Additionally a properly sized expansion tank may be required Air charged diaphragm...

Page 21: ...or installed on the inlet side of the heat exchanger The exact temperature set point is based on system requirements REMOTE TEMPERATURE CONTROL CONNECTION TO TERMINAL STRIP A remote temperature control may be connected to the boiler The boiler is equipped with a terminal strip to allow easy connection Connection to the terminal strip will allow the remote temperature control to make and break the ...

Page 22: ...20 L o c h i n v a r D E S I G N E R S G U I D E E F F I C I E N C Y B O I L E R 6 1 5 8 8 9 8 9 0 0 E F F I C I E N C Y B O I L E R P I P I N G D I A G R A M S ...

Page 23: ...PARATOR L E G E N D PIPING DIAGRAM PRIMARY SECONDARY BOILER PIPING 12 MAX HEATING RETURN LOOP HEATING SUPPLY LOOP AS CLOSE AS PRACTICAL 12 OR 4 PIPE DIAMETERS MAXIMUM DISTANCE BETWEEN MANIFOLD CONNECTIONS TO SYSTEM MAKE UP WATER TO FLOOR DRAIN LIT0476 This illustration is for concept only and should not be used for any actual installation without engineering or technical advice from a licensed eng...

Page 24: ...UT OFF AIR SEPARATOR L E G E N D This illustration is for concept only and should not be used for any actual installation without engineering or technical advice from a licensed engineer All necessary equipment may not be illustrated PIPING DIAGRAM MULTIPLE UNIT PRIMARY SECONDARY PIPING 12 MAX FROM SYSTEM RETURN TO SYSTEM SUPPLY MAKE UP WATER CAP EACH MANIFOLD LIT0475 AS CLOSE AS PRACTICAL 12 OR 4...

Page 25: ...ON AIR SEPARATOR L E G E N D MAKE UP WATER HEATING RETURN LOOP BYPASS HEATING SUPPLY LOOP PRIMARY SECONDARY BOILER PIPING WITH BYPASS FOR LOW TEMPERATURE OPERATION AS CLOSE AS PRACTICAL 12 OR 4 PIPE DIAMETERS MAXIMUM DISTANCE BETWEEN MANIFOLD CONNECTIONS TO SYSTEM TO FLOOR DRAIN 12 MAX LIT0473 This illustration is for concept only and should not be used for any actual installation without engineer...

Page 26: ...28 L o c h i n v a r D E S I G N E R S G U I D E E F F I C I E N C Y B O I L E R 6 1 5 8 8 9 8 9 0 0 Notes ...

Page 27: ......

Page 28: ...Lochinvar Corporation 615 889 8900 Fax 615 547 1000 www Lochinvar com EB DG 03 4 5M 2 05 Printed in U S A ...

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